android典型代码系列(二十一)------根据文件后缀名获得对应的MIME类型

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21_根据文件后缀名获得对应的MIME类型1 :
import java.io.File;public class FileType {    /**     * 根据文件后缀名获得对应的MIME类型。     *      * @param file     */    public String getMIMEType(File file) {        String type = "*/*";        String fName = file.getName();        // 获取后缀名前的分隔符"."在fName中的位置。        int dotIndex = fName.lastIndexOf(".");        if (dotIndex < 0) {            return type;        }        /* 获取文件的后缀名 */        String end = fName.substring(dotIndex, fName.length()).toLowerCase();        if (end == "")            return type;        // 在MIME和文件类型的匹配表中找到对应的MIME类型。        for (int i = 0; i < MIME_MapTable.length; i++) {            if (end.equals(MIME_MapTable[i][0]))                type = MIME_MapTable[i][1];        }        return type;    }    private final String[][] MIME_MapTable = {            // {后缀名，MIME类型}            { ".3gp", "video/3gpp" },            { ".apk", "application/vnd.android.package-archive" },            { ".asf", "video/x-ms-asf" }, { ".avi", "video/x-msvideo" },            { ".bin", "application/octet-stream" }, { ".bmp", "image/bmp" },            { ".c", "text/plain" }, { ".class", "application/octet-stream" },            { ".conf", "text/plain" }, { ".cpp", "text/plain" },            { ".doc", "application/msword" },            { ".exe", "application/octet-stream" }, { ".gif", "image/gif" },            { ".gtar", "application/x-gtar" }, { ".gz", "application/x-gzip" },            { ".h", "text/plain" }, { ".htm", "text/html" },            { ".html", "text/html" }, { ".jar", "application/java-archive" },            { ".java", "text/plain" }, { ".jpeg", "image/jpeg" },            { ".jpg", "image/jpeg" }, { ".js", "application/x-javascript" },            { ".log", "text/plain" }, { ".m3u", "audio/x-mpegurl" },            { ".m4a", "audio/mp4a-latm" }, { ".m4b", "audio/mp4a-latm" },            { ".m4p", "audio/mp4a-latm" }, { ".m4u", "video/vnd.mpegurl" },            { ".m4v", "video/x-m4v" }, { ".mov", "video/quicktime" },            { ".mp2", "audio/x-mpeg" }, { ".mp3", "audio/x-mpeg" },            { ".mp4", "video/mp4" },            { ".mpc", "application/vnd.mpohun.certificate" },            { ".mpe", "video/mpeg" }, { ".mpeg", "video/mpeg" },            { ".mpg", "video/mpeg" }, { ".mpg4", "video/mp4" },            { ".mpga", "audio/mpeg" },            { ".msg", "application/vnd.ms-outlook" }, { ".ogg", "audio/ogg" },            { ".pdf", "application/pdf" }, { ".png", "image/png" },            { ".pps", "application/vnd.ms-powerpoint" },            { ".ppt", "application/vnd.ms-powerpoint" },            { ".prop", "text/plain" },            { ".rar", "application/x-rar-compressed" },            { ".rc", "text/plain" }, { ".rmvb", "audio/x-pn-realaudio" },            { ".rtf", "application/rtf" }, { ".sh", "text/plain" },            { ".tar", "application/x-tar" },            { ".tgz", "application/x-compressed" }, { ".txt", "text/plain" },            { ".wav", "audio/x-wav" }, { ".wma", "audio/x-ms-wma" },            { ".wmv", "audio/x-ms-wmv" },            { ".wps", "application/vnd.ms-works" }, { ".xml", "text/xml" },            { ".xml", "text/plain" }, { ".z", "application/x-compress" },            { ".zip", "application/zip" }, { "", "*/*" } };}
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